1) 4 massage heads built-in infrared heating on the back which can folded.  

 2) size:49*43*35(18)cm.  

3) air bags right and left arms,3 air bags on the seat. 

 4) Portable for home, car, office. 

 5) Fit for multiple-parts.  

6) 12V-2.5A, low voltage for safe use.